---

yaml
---
r: 142570
b: refs/heads/try2
c: 31114ac
h: refs/heads/master
v: v3

Author: alexcrichton

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: b727b9efd7b854ebf099f72894c2d662d2c63977
+refs/heads/try2: 31114acdd7da8f2826558b11adea96d1c561aabd
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/src/librustc/middle/typeck/mod.rs

@@ -319,16 +319,19 @@ fn check_main_fn_ty(ccx: &CrateCtxt,
                 }
                 _ => ()
             }
-            let mut ok = ty::type_is_nil(fn_ty.sig.output);
-            let num_args = fn_ty.sig.inputs.len();
-            ok &= num_args == 0u;
-            if !ok {
-                tcx.sess.span_err(
-                    main_span,
-                    fmt!("Wrong type in main function: found `%s`, \
-                          expected `fn() -> ()`",
-                         ppaux::ty_to_str(tcx, main_t)));
-            }
+            let se_ty = ty::mk_bare_fn(tcx, ty::BareFnTy {
+                purity: ast::impure_fn,
+                abis: abi::AbiSet::Rust(),
+                sig: ty::FnSig {
+                    bound_lifetime_names: opt_vec::Empty,
+                    inputs: ~[],
+                    output: ty::mk_nil()
+                }
+            });
+
+            require_same_types(tcx, None, false, main_span, main_t, se_ty,
+                || fmt!("main function expects type: `%s`",
+                        ppaux::ty_to_str(ccx.tcx, se_ty)));
         }
         _ => {
             tcx.sess.span_bug(main_span,

branches/try2/src/test/compile-fail/bad-main.rs

@@ -8,6 +8,4 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// error-pattern:expected `fn()
-
-fn main(x: int) { }
+fn main(x: int) { } //~ ERROR: main function expects type

branches/try2/src/test/compile-fail/extern-main-fn.rs

@@ -0,0 +1,11 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+extern fn main() {} //~ ERROR: main function expects type

branches/try2/src/test/compile-fail/main-wrong-type-2.rs

@@ -9,5 +9,5 @@
 // except according to those terms.
 
 fn main() -> char {
-//~^ ERROR Wrong type in main function: found `extern "Rust" fn() -> char`
+//~^ ERROR: main function expects type
 }

branches/try2/src/test/compile-fail/main-wrong-type.rs

@@ -14,5 +14,5 @@ struct S {
 }
 
 fn main(foo: S) {
-//~^ ERROR Wrong type in main function: found `extern "Rust" fn(S)`
+//~^ ERROR: main function expects type
 }